M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Physics
BASIC CONCEPTS OF INSTRUMENTATION
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is accidental or random errors?
2. A set of independent voltage measurements taken by four
observers was recorded as 115.32 115.63 115.42
115.18 V. Calculate
the average voltage
the range of error.
3. What is step input?
4. Define transient input.
5. What is transducer? Mention its few applications.
6. What is inverse transducer? Give examples.
7. Write down the principle of bimetallic transducer.
8. Obtain the relation between temperature and resistance.
Mention the advantages of metal type thermometer.
Sub. Code
521505
RW-937
2
WSS
9. What is ultrasonic flow meter? List its uses.
10. How do you measure the intensity of sound?
Part B x 5 25)
Answer all questions, choosing either or
11. What is drift and linearity? Explain.
Or
Describe the static sensitivity of linear and
non-linear instruments.
12. Describe your understanding of compensation
networks.
Or
Describe the dynamic response of the periodic input
harmonic signal in first order System.
13. Explain the working of photo emissive and photo
conductive transducers with neat diagrams.
Or
Sketch the schematic diagram of electromechanical
transducer and explain its working.
14. Describe the temperature measurement by
non-electrical method.
Or
Sketch and explain the working of glass
thermometer.
15. Give a short explanation of sliding vane type flow
meter.
Or
Sketch and describe the block diagram of sound
level meter.
RW-937
3
WSS
Part C x 10 30)
Answer any three questions.
16. Explain the impedance loading and matching. List out
the opt parameters for selecting a good instrument.
17. Explain the response of step input and transient input for
first order system.
18. Describe the construction and working of vibrating string
transducer.
19. Discuss the theory of electrical resistance thermometer.
20. Mention the selection and uses of microphone. Illustrate
the working of Piezo electric crystal type microphone.
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